Abstract
The two-dimensional NMR double-quantum filtered (DQF) COSY spectrum of an AX spin system of spin-1 has been calculated by numerical density matrix calculations. The basic phase cycle to achieve double-quantum filtration and phase modulation of the signal consists of eight steps. The first four steps of the pulse sequence, which lead to amplitude modulation of the signal, were described in Part I. The second four steps of the pulse sequence are described here. It is possible to relate the coefficients needed to calculate the DQF-COSY NMR spectrum of an AX spin system of quadrupolar nuclei to the one needed to calculate the COSY NMR spectrum of a similar system. This contributes to a significant simplification of the calculations compared to a full density-matrix treatment. © 2010 Wiley Periodicals, Inc. Concepts Magn Reson Part A 36A: 394–399, 2010.
Published Version
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